It is pretty straightforward actually. In this tutorial, we will add a field to be displayed publicly in speakers profile.
First, go to the Form builder tool, click on Create new form button to create a new form, and select the speaker role when asked to choose a role type.
Now, go to Form Builder > Speaker Registration form and select a field type to create a new field.
Now, go to Contacts and click on a speaker's profile to enter her bio to add some information about the user in the Bio field and clicked on Save button to save it. See screenshot below.
This information, now displays under speaker's overview section in her public profile. See screenshot.